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69 lines
2.3 KiB
69 lines
2.3 KiB
/* |
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* Invoke a socket syscall, either directly or via __NR_socketcall. |
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* |
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "tests.h" |
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#include <errno.h> |
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#include <unistd.h> |
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#include <asm/unistd.h> |
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/* |
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* Invoke a socket syscall, either directly or via __NR_socketcall. |
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* if nr == -1, no direct syscall invocation will be made. |
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*/ |
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int |
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socketcall(const int nr, const int call, |
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long a1, long a2, long a3, long a4, long a5) |
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{ |
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int rc = -1; |
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errno = ENOSYS; |
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# ifdef __NR_socketcall |
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static int have_socketcall = -1; |
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if (have_socketcall < 0) { |
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if (syscall(__NR_socketcall, 0L, 0L, 0L, 0L, 0L) < 0 |
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&& EINVAL == errno) { |
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have_socketcall = 1; |
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} else { |
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have_socketcall = 0; |
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} |
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} |
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if (have_socketcall) { |
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const long args[] = { a1, a2, a3, a4, a5 }; |
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rc = syscall(__NR_socketcall, call, args); |
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} else |
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# endif |
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{ |
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if (nr != -1) |
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rc = syscall(nr, a1, a2, a3, a4, a5); |
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} |
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return rc; |
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}
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